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Resonance induced divalent Eu states in EuF3 ultrathin layer |
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| Authors: | J Szade W Burian Z Celi&#x;ski T O&#x;Keevan M Zangrando F Bondino E Magnano |
| Institution: | aUniversity of Silesia, A. Chelkowski Institute of Physics, Solid State Physics Department, Uniwersytecka 4, 40-007 Katowice, Poland bCenter for Magnetism and Magnetic Nanostructures, University of Colorado at Colorado Springs, 1420 Austin Bluffs Pkwy, Colorado Springs, CO 80918, USA cLaboratorio TASC-INFM, S.S. 14KM 163.5 in Area Science Park, 34012 Trieste, Italy |
| Abstract: | Resonant photoemission was used to investigate the EuF3 ultrathin layer for the photon energies within the Eu 4d → 4f excitation region. Photoemission from the valence band in resonance showed the lines which can be attributed to two Eu valence states (Eu+3 and Eu+2) whereas the off resonance spectra of EuF3 ultrathin layer do not exhibit divalent states of Eu. An explanation of that effect is proposed which is based on the charge transfer from the ligand. |
| Keywords: | Photoelectron spectroscopy Synchrotron radiation Molecular beam epitaxy Photoelectron emission Europium fluoride Thin film structures |
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